Oscillatory support for motion picture projection machines



lgX; l11o, 193.1. A DINA 1,831,344

OSCILLATORY SUPIORT FOR MOTION PICTURE PROJECTION MACHINES -Filed Sept. 30. 1927 5 Shee'c.s-Shee l l Nov. 1o, 1931. DINA 1,831,344

u OSCILLATORY SUPPORT FOR MOTION PICTURE PROJECTION MACHINES Filed Sept. 30. 1927 3 Sheets-Sheet 2 Nqv. 10, 1931. A. DINA 1,831,344

OSCILLATORY SUPPORT FOR MOTION PIOTURE PROJECTION MACHINES Filed Sept. 30. 1927 v3 Sheets-Sheet 3 Patented. Nov. 10, 1.93.1

UNITED STATES PATENT OFFICE AUGUSTO `DINA, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO INTERNATIONAL PROJECTOR CORPORATION, 0F NEW YORK, N. Y., A CORPORATION OF DELAWARE OSCILLATORY SUPPORT FOR MOTION' PICTURE PROJECTION MACHINES Application led September 30, 1927. Serial No. 222,971.

This invention relates to machine supports,

and more particularly to an adjustable sup-A therefore, to provide a rigid means for supporting the machine whereby undesirable vibrations and consequent shaking of the picture may be prevented and to rovide means for adjusting the angle of projection so that the picture -may be directed upon a distant screen.

In accordance with the present invention the various elements of the machine are supported upon a transverse frame which is pivotally mounted upon an upright stan-dard or pedestal. The pivotal connection is preferably located between the lamp house and the projection head so that the machine will be inherently partly balanced. The weight of the lamp house is sufficiently great, however, to require extra supporting means in order to prevent any undue strain from being placed upon the pedestal.

This invention also provides an auxiliary supporting member attachedto the frame at a point near the rear end of the lamp house and extending downwardly at an angle to the supporting pedestal, the lower end thereof being joined to a suitable base. The dis tance between the auxiliary support and pedestal is greater at the base than at the upper end, whereby an increased rigidity is obtamed and the tendency of the machine to tip or shake is reduced. f

The point of attachment of the support to the frame may be varied longitudinally of the frame to provide for-lamp houses of various sizes which are commonly constructed with feet differently located.

The invention also consists in certain new and originaly features of construction and combinations of parts hereinafter set forth and claimed.

Although the novel features which are believed to be characteristic of this invention will be particularly pointed out in the claims appended hereto, the invention itself, as to itsl objects and advantages, the mode of its operation and the manner of its organization may be better understood by referring to the'following description taken in connection with the accompanying drawings forming a part thereof, in which Fig. 1 is a side elevation of a support for a motion picture project-ing apparatus constructed in accordance with this invention;

Fig. 2 is a rear elevation thereof;

Fig. 3 is a section taken on the line 3-3 of Fig. 1 showing the frame and connecting means;

, Fig. 4 is a section taken on line 4-4 of Fig, 1 showing the connection for the adjusting strut;

Fig. 5 is a side elevation of a modified form of support;

Fig. 6 is a rear elevation thereof, and

Fig. 7 is a plan view of the adjusting strut and connecting means shown in Fig. 5.

Like reference characters denote like parts in the several figures of the drawings.

In the following .description and in the claims parts will be identified by .specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit.

Referring to the drawings more in detail, the support which has been shown 'by way of example, as suitable for a motion picture projecting apparatus, comprises pedestal member 10 rigidly secured to and supported by a suitable base 11. Frame 13 (Figs. 1 and 3) is pivotally mounted at the upper portion of pedestal 10 and adapted to support various pieces of apparatus, such as lamp house 14, projection head 15 and co-operating lm magazines comprising a motion picture projection machine (not shown).

An adjustable leg comprising stationary and movable members, (Figs. 1 and 2) is shown as extending between base 11 and the rear end of frame 13 for the purpose of adjusting and holding said frame 13 in any desired angular position. v

The stationary member comprises a air of rods 204 (Fig. 2) pivotally supporte by base 11, las'by rod 21 passing through collars 22 secured to said rods 20 and collars 23 secured to said base 11. The up er ends of rods 20 are joined by-frame 24 igs. 2 and 4) having tubular members 25 through which said rods 20 are extended. Said rods may be rigidly secured to said tubular members as by means of nuts 26 threaded thereon. Frame 24 comprises a transverse section 28 and a lurality of collars 29 extending therefrom or a purpose to be hereinafter set forth.

The movable member of the supportin leg comprises a pair of rods 30 joined at their ower end by frame 31, in which they are rigidly secured. Frame 31 is provided with a pair of collars 32 in sliding engagement with rods ber 42 journalled -in frame 24 by means ofj 43'. Threaded member 42 may be bearin rotate as by gear wheel 44\ (Fig. 4) which is rigidly secured thereto, andco-operates with worm gear 45 carried uponV shaft 46. Said shaft 46 may be journalled in collars 29 aforementioned extended from transverse member 28 of frame 24 and may be rotated by suitable hand wheels 47 located at the ends thereof.

An adjusting strut comprising a-pair of rods 50 (Figs. 1, 3 and 4) is extended between pedestal 10 and frame 24 forming a part of the above mentioned adjustable leg. Rods 50 ma be journalled on rod 46 as by collars 51 an may be secured to pedestal 10 by means of yoke 52 pivotally connected to said pedestal as at 53. Rods 50 may be provided with threaded ends which are extended through justed'therein asv by adjusting nuts 55.

Inl the operation of the apparatus thus far described, frame 13 may be pivotally moved about pedestal 10 for adjusting the angular pro'ection of the device b suitable rotation of liand wheel'47, which by means of worm gear 45 and gear wheel 44 serves to rotate'threaded member 42 and thereb move threaded rod 40 longitudinally thereo Rod 40 forming a part ofthe movable member of the adjustable leg, will cause rods 20 and 30 to be slidably displaced through collars 32 and 41. The leg may consequently be extended by a suitable amount to cause frame 13 to assume the angle desired.

Inasmuch as collars 36 will slide longitudinally on frame 13 as the same is tilted, it may become necessary to adjust the distance between said collars and the pedestal 10 to avoid the same from interferin with the feet of the lamp house 14. This atjustment may be accomplished b nuts 55 co-operating with the threaded en s of adjusting struts 50 whereby the strut may be changed in length as desired. This adjustment further rovides the use of various size lamp houses lliaving differently located feet, since the upper end of the adjustable leg may be caused to assume any desired position with respect to frame 13.

In the modification shown in Figs. 5, 6 and '7, the various elements corresponding to those in a mannersimilar to those above set forth the will notbe again described in detail.-

he supporting means constructed in accordance with the present invention provides for the interchangeable use of various forms and types-of lamp houses. Furthermore, the line of -projection may be readily and accurately adjusted by mea-ns ofi hand wheel 47 without interrupting the operation of the machine andthe adjustment once made will be accurately maintained since the worm gear is substantially non-reversible unless positively moved by movement of hand wheel 47. Increased stability is obtained by extending the adjustable leg at an incline to the supporting pedestal whereby the base of said leg is located at a greater distance from the pedestal than the top portion thereof. Since the lamp house is frequently the heaviest part of a motion picture projecting machine, the adl collars 54 attached to said yoke 52 and ad-'Iv justeble leg being leeeted directly under or -adjacent to the lainp house serves as a firm support therefor and prevents vibrations thereof.

In the drawings accompanying and forming part of this specification, a practical commercial embodiment of. the invention is shown, but as such illustration is primarily for purposes of disclosure, it will be under- Stood that the structure may be modified in various respects without departure from the broad s irit and scope of the invention as hereina ter defined and claimed.

What is claimed is:

1. A machine support comprising a base, an upright pedestal secured thereto, a frame pivotally mounted on said pedestal for supporting said machine and an adjustable leg loo' extending between said frame and s aid base,' said legbeing extensible for varying the` angularlty of said frame, an adjust-able link interconnecting said leg and said pedestal whereby the point of attachment of said leg may be varied. p v I 2. Inl a motion picture projecting apparatus, an u right pedestal, a base member therefor, a rame pivotally sup orted thereby,an adjustable leg extendin etween said frame' and said base, said leg icing slidably extensible for varying the angularlty of said frame and means for slidabl adjusting said leg longitudinally on said rame.

3. .In a machine support, an upright pedestal, a base member therefor, a. frame pivotally supported thereby, an adjustable leg comprising a, pair of members in sliding engagement, one of said members being pivotally 'secured' to said base, and the other of said members being-slidably connected to said frame for movement longitudinally thereof.

4. A machine support comprising an upright pedestal, a base member therefor, a framepivotally supportedA thereby, an adjustable leg comprising a pair of members slidably connected together, one of said members being pivotally secured to said base, the

yother of said members being slidably connected to said frame for movement longitudinally` thereof, and means for slidably moving said members with respect to each other for varying the angularity of said frame.

5. In 'a motion. picture projecting apparatus, an upright pedestal, a base member therefor, a rame ivotally supported thereby an adjustable lleg comprising a pair of members slidably connected together, one of said members being ivotall secured to said base, the'other of sald mem rs being slidably connected to said frame for movement longitudinally thereof, and means com rising a worm and cooperatng'gear. whee for slidably moving said members with respect to each other. f

with for slidably moving said members, and

an adjustable link interconnecting said leg and said pedestal fo-r controllin the longitudinal position of said leg wit respect to said frame.

8. A machine support com rising a base, an upright pedestal secured tlliereto, a frame pivotally mounted on said pedestal for supporting said machine and an adjustable leg extending between said frame and said base, said leg being extensible for varying the angularlty of said frame, means for slidably connecting said leg to said frame for movement longitudinally thereof, and a link interconnecting said leg to said pedestal for'controlling the longitudinal position of said leg with respect to said frame.

9. In a projection machine, a pedestal lee ver carrying the projection apparatus, a base substantiall coextensive with said lever, a vertical pe estal pivotally carrying said lever and mounted directly under the pivot point thereof in a position to support the major portion of the weight of the apparatus, an extensible rear bracin frame comprising a pair of slidably adjusta le sections extending between said lever and the rear port-ion of said base and means mounted between said sections for extending said frame to vary the angle of projection. A

AUGUST() DINA.

6. Inra picture projecting apparatus, a

support comprising an uprightpedestal, a

. frame pivotally mounted thereon and adapted to support said ap aratus, an inclined leg extending downwar ly from said frame, comprising-a pair of members inl sliding engement, means for extending said memers for -varyingxthe angularity of said frame, comprising a t readed rod attached to one of .said members, acooperating rotatable threaded member attached to the other thereof, a link ivotally connected to said leg and to said pedestal and means foradjusting said link for varyin the point of attachment of said leg to said ram 7. In a picture projecting apparatus, an

upright pedestal, a base member therefor, a

-framc pivotally supported by said pedestal,

'anl adjllistable leg comprising a pair ofmembers s dably connected together, one of said 

